Scott Esposito offers an article about litblogs for Rain Taxi. Not a man to explore an issue without looking at it from multiple angles, Scott notes that the current litblog structure “presents a threat of insularity” and notes that “even the best litblogs sometimes feature typos or half-formed thoughts.”
Writing multiple drafts would help, but I suspect the only one of us who does that is Dan Green.
I found that with Firefox, you can use a spell checker extension called Spellbound. I try to go over my posts at least a few times before I post them and then run the spell check to get the most glaring mistakes. Sometimes, I am too angry to edit myself carefully and just post away.